Bush graduated from Combat Crew Training School on June 23, 1970, having fulfilled his two years of active duty. But he still flew the F-102 Delta Daggers a few times a month; his unit kept two of the fighters, fully armed, on round-the-clock alert and needed the pilots to man them.
To start at Harvard, Bush needed early release from Guard duty in Texas, and he got it easily, about eight months short of a full six years. A Bush spokesman, Dan Bartlett, said early departures were quite common and, in Bush's case, appropriate because his unit had phased out the F-102s.
Also in that article...
During a second interview, Bush himself raised the issue. "Had my unit been called up, I'd have gone . . . to Vietnam," Bush said. "I was prepared to go." But there was no chance Bush's unit would be ordered overseas. Bush says that toward the end of his training in 1970, he tried to volunteer for overseas duty, asking a commander to put his name on the list for a "Palace Alert" program, which dispatched qualified F-102 pilots in the Guard to the Europe and the Far East, occasionally to Vietnam, on three- to six-month assignments.
He was turned down on the spot. "I did [ask] – and I was told, 'You're not going,' " Bush said. Only pilots with extensive flying time – at the outset, 1,000 hours were required – were sent overseas under the voluntary program. The Air Force, moreover, was retiring the aging F-102s and had ordered all overseas F-102 units closed down as of June 30, 1970.